Limei Ran 1 , Uma Shankar 1 , Ellen Cooter 2 , Aijun Xiu 1 , Neil Davis 1

1. New Tools and Updates in the Spatial Allocator for Meteorology and Air Quality Modeling Limei Ran1, Uma Shankar1, Ellen Cooter2, Aijun Xiu1, Neil Davis1 1Center for Environmental Modeling for Policy Development, Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 2Atmospheric Modeling and Analysis Division, U.S. Environmental Protection Agency, Research Triangle Park, NC Contact: lran@unc.edu INTRODUCTION The Spatial Allocator (SA) is a set of geospatial tools we have developed over the past few years to help users manipulate and generate geospatial data files related to emissions and air quality modeling. The current release of the SA contains three parts of tool sets: Vector, Raster and Surrogate Tools. The current release of the SA contains the tools to process 2001 National Land Cover Database (NLCD) and Moderate Resolution Imaging Spectroradiometer (MODIS) land cover data for WRF modeling. Since then, with supports from NASA ROSES and US EPA projects we have enhanced the SA Raster Tools to process the following data: 1. MODIS cloud and Aerosol optical depth (AOD) products, 2. OMI AOD and NO2 products at both swath (L2 ) and gridded (L2G and L3) level, 3.Geostationary Operational Environmental Satellite (GOES) data, and 4. The Environmental Policy Integrated Climate (EPIC) fertilizer modeling system data for CMAQ ammonia bi-directional flux modeling. OBJECTIVES 1. Show the new tools developed in the coming release of the SA Raster Tools system, 2. Demonstrate gridded satellite images and some satellite data comparisons with CMAQ output, 3. Display processed data for EPIC fertilizer modeling, and 4. Some updates in the Vector Tools for the coming SA release. • CURRENT DEVELOPMENT • Tool to generate new biogenic emission landcover database (BELD4) from current 30-m NLCD, 500-m MODIS land cover data, Forest Inventory and Analysis data, and National Agricultural Statistical Service (NASS) data • MODIS L2 Swath Cloud and Aerosol Product Re-griding Tool • Obtain data (hdf4) from: http://ladsweb.nascom.nasa.gov/data/search.html • For MODIS cloud product: download L2 cloud product and L1 geo-location files (for 1-km variable location) • For MODIS aerosol product: download L2 aerosol product files • A run script file to define domain, input data directory, variables to be re-gridded, date range, and output NetCDF file Sample EPIC Site Weather (June 14, 2002) • EPIC Fertilizer Modeling Tools for CMAQ Bi-directional NH3 Modeling • MCIP/CMAQ to EPIC tool: • Radiation (MJ m^2, daily total) • Tmax, Tmin (C, daily) • Precipitation (mm, daily total) • Relative humidity (fraction, daily average) • Windspeed (m s^-1, daily average) • Dry N from CMAQ (g/ha, daily total) • Wet N from CMAQ (g/ha, daily total) • EPIC to CMAQ tool to create three NetCDF files for EPIC sites: • Soil property output (e.g., bulk density, wilting point…) • Time step output ( e.g. NO3 loss, denitrification, N-volatilized, Fertilize-NH3, LAI, crop height…) • Fertilizer application output ( e.g. Application-Date, Application-Depth, mineral and organic N and P) MODIS Terra Aerosol 2006-06-28:17:00 Gridded EUS 12km CMAQ domain and original Data MODIS Aqua Cloud 2006-06-29:08:15 Gridded EUS 12km CMAQ domain and original Data • OMI L2 Swath Aerosol and NO2 Product Re-griding Tool • Obtain data from: http://mirador.gsfc.nasa.gov/ • Re-grid the following L2 swath products with 13x24km spatial resolution at nadir: • OMI Near-UV Aerosol Extinction and Absorption Optical Depth • OMI-Aura Nitrogen Dioxide (NO2) Total and Tropospheric Column